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crosstool-ng/scripts/build/libc_glibc.sh
Yann E. MORIN" 1b9a490601 Some people are reposrting that ftp does not work on their network, probably due to proxies, while http does work. 
Some (most) of the sites we use toretrieve tarballs have http equivallent for the ftp service. Use http as a failover.
There's no solution for those sites that do not have such an http equivalent.

 /trunk/scripts/build/binutils.sh         |    5     2     3     0 ++---
 /trunk/scripts/build/libc_glibc.sh       |    4     2     2     0 ++--
 /trunk/scripts/build/libc_uClibc.sh      |    2     1     1     0 +-
 /trunk/scripts/build/debug/400-ltrace.sh |    2     1     1     0 +-
 /trunk/scripts/build/debug/300-gdb.sh    |    8     3     5     0 +++-----
 /trunk/scripts/build/kernel_linux.sh     |    7     2     5     0 ++-----
 /trunk/scripts/build/cc_gcc.sh           |    6     2     4     0 ++----
 /trunk/scripts/build/gmp.sh              |    4     1     3     0 +---
 8 files changed, 14 insertions(+), 24 deletions(-)
2008-05-03 17:51:16 +00:00

500 lines
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# This file adds functions to build glibc
# Copyright 2007 Yann E. MORIN
# Licensed under the GPL v2. See COPYING in the root of this package
do_print_filename() {
[ "${CT_LIBC}" = "glibc" ] || return 0
echo "glibc-${CT_LIBC_VERSION}"
for addon in `do_libc_add_ons_list " "`; do
# NPTL addon is not to be downloaded, in any case
[ "${addon}" = "nptl" ] && continue || true
echo "glibc-${addon}-${CT_LIBC_VERSION}"
done
}
# Download glibc
do_libc_get() {
# Ah! Not all GNU folks seem stupid. All glibc releases are in the same
# directory. Good. Alas, there is no snapshot there. I'll deal with them
# later on... :-/
CT_GetFile "${CT_LIBC_FILE}" {ftp,http}://ftp.gnu.org/gnu/glibc
# C library addons
for addon in `do_libc_add_ons_list " "`; do
# NPTL addon is not to be downloaded, in any case
[ "${addon}" = "nptl" ] && continue || true
CT_GetFile "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" {ftp,http}://ftp.gnu.org/gnu/glibc
done
return 0
}
# Extract glibc
do_libc_extract() {
CT_ExtractAndPatch "${CT_LIBC_FILE}"
# C library addons
for addon in `do_libc_add_ons_list " "`; do
# NPTL addon is not to be extracted, in any case
[ "${addon}" = "nptl" ] && continue || true
CT_ExtractAndPatch "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
done
return 0
}
# There is nothing to do for glibc check config
do_libc_check_config() {
:
}
# This function installs the glibc headers needed to build the core compiler
do_libc_headers() {
# Only need to install bootstrap glibc headers for gcc-3.0 and above? Or maybe just gcc-3.3 and above?
# See also http://gcc.gnu.org/PR8180, which complains about the need for this step.
grep -q 'gcc-[34]' "${CT_SRC_DIR}/${CT_CC_FILE}/ChangeLog" 2>/dev/null || return 0
CT_DoStep INFO "Installing C library headers"
mkdir -p "${CT_BUILD_DIR}/build-libc-headers"
cd "${CT_BUILD_DIR}/build-libc-headers"
CT_DoLog EXTRA "Configuring C library"
# The following three things have to be done to build glibc-2.3.x, but they don't hurt older versions.
# 1. override CC to keep glibc's configure from using $TARGET-gcc.
# 2. disable linuxthreads, which needs a real cross-compiler to generate tcb-offsets.h properly
# 3. build with gcc 3.2 or later
# Compare these options with the ones used when building glibc for real below - they're different.
# As of glibc-2.3.2, to get this step to work for hppa-linux, you need --enable-hacker-mode
# so when configure checks to make sure gcc has access to the assembler you just built...
# Alternately, we could put ${PREFIX}/${TARGET}/bin on the path.
# Set --build so maybe we don't have to specify "cross-compiling=yes" below (haven't tried yet)
# Note: the warning
# "*** WARNING: Are you sure you do not want to use the `linuxthreads'"
# *** add-on?"
# is ok here, since all we want are the basic headers at this point.
# Override libc_cv_ppc_machine so glibc-cvs doesn't complain
# 'a version of binutils that supports .machine "altivec" is needed'.
addons_config="--enable-add-ons=`do_libc_add_ons_list ,`"
# We need to remove any threading addon when installing headers
addons_config="${addons_config//nptl/}"
addons_config="${addons_config//linuxthreads/}"
addons_config=`echo "${addons_config}" |sed -r -e 's/^,+//; s/,+$//; s/,+/,/g;'`
cross_cc=`CT_Which "${CT_TARGET}-gcc"`
CT_DoLog DEBUG "Using gcc for target: \"${cross_cc}\""
CT_DoLog DEBUG "Extra config passed : \"${addons_config}\""
libc_cv_ppc_machine=yes \
CC=${cross_cc} \
"${CT_SRC_DIR}/${CT_LIBC_FILE}/configure" \
--build="${CT_UNIQ_BUILD}" \
--host="${CT_TARGET}" \
--prefix=/usr \
--with-headers="${CT_HEADERS_DIR}" \
--without-cvs \
--disable-sanity-checks \
--enable-hacker-mode \
${addons_config} \
--without-nptl 2>&1 |CT_DoLog ALL
CT_DoLog EXTRA "Installing C library headers"
if grep -q GLIBC_2.3 "${CT_SRC_DIR}/${CT_LIBC_FILE}/ChangeLog"; then
# glibc-2.3.x passes cross options to $(CC) when generating errlist-compat.c,
# which fails without a real cross-compiler.
# Fortunately, we don't need errlist-compat.c, since we just need .h
# files, so work around this by creating a fake errlist-compat.c and
# satisfying its dependencies.
# Another workaround might be to tell configure to not use any cross
# options to $(CC).
# The real fix would be to get install-headers to not generate
# errlist-compat.c.
# Note: BOOTSTRAP_GCC is used by:
# patches/glibc-2.3.5/glibc-mips-bootstrap-gcc-header-install.patch
libc_cv_ppc_machine=yes \
make CFLAGS="-O -DBOOTSTRAP_GCC" sysdeps/gnu/errlist.c 2>&1 |CT_DoLog ALL
mkdir -p stdio-common
# sleep for 2 seconds for benefit of filesystems with lousy time
# resolution, like FAT, so make knows for sure errlist-compat.c doesn't
# need generating
sleep 2
touch stdio-common/errlist-compat.c
fi
# Note: BOOTSTRAP_GCC (see above)
libc_cv_ppc_machine=yes \
make cross-compiling=yes install_root=${CT_SYSROOT_DIR} \
CFLAGS="-O -DBOOTSTRAP_GCC" ${LIBC_SYSROOT_ARG} \
install-headers 2>&1 |CT_DoLog ALL
# Two headers -- stubs.h and features.h -- aren't installed by install-headers,
# so do them by hand. We can tolerate an empty stubs.h for the moment.
# See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
mkdir -p "${CT_HEADERS_DIR}/gnu"
touch "${CT_HEADERS_DIR}/gnu/stubs.h"
cp "${CT_SRC_DIR}/${CT_LIBC_FILE}/include/features.h" "${CT_HEADERS_DIR}/features.h"
# Building the bootstrap gcc requires either setting inhibit_libc, or
# having a copy of stdio_lim.h... see
# http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
cp bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
# Following error building gcc-4.0.0's gcj:
# error: bits/syscall.h: No such file or directory
# solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
# but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
[ "${CT_ARCH}" != "arm" ] && cp misc/syscall-list.h "${CT_HEADERS_DIR}/bits/syscall.h" || true
# Those headers are to be manually copied so gcc can build properly
pthread_h="${CT_SRC_DIR}/${CT_LIBC_FILE}/${CT_THREADS}/sysdeps/pthread/pthread.h"
pthreadtypes_h=
case "${CT_THREADS}" in
nptl)
# NOTE: for some archs, the pathes are different, but they are not
# supported by crosstool-NG right now. See original crosstool when they are.
pthread_h="${CT_SRC_DIR}/${CT_LIBC_FILE}/${CT_THREADS}/sysdeps/pthread/pthread.h"
pthreadtypes_h="${CT_SRC_DIR}/${CT_LIBC_FILE}/nptl/sysdeps/unix/sysv/linux/${CT_KERNEL_ARCH}/bits/pthreadtypes.h"
if [ ! -f "${pthreadtypes_h}" ]; then
pthreadtypes_h="${CT_SRC_DIR}/${CT_LIBC_FILE}/${CT_LIBC}-ports-${CT_LIBC_VERSION}/sysdeps/unix/sysv/linux/${CT_KERNEL_ARCH}/nptl/bits/pthreadtypes.h"
fi
;;
linuxthreads)
pthreadtypes_h="${CT_SRC_DIR}/${CT_LIBC_FILE}/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h"
;;
*)
pthread_h=
pthreadtypes_h=
;;
esac
if [ -n "${pthread_h}" ]; then
cp -v "${pthread_h}" "${CT_HEADERS_DIR}/pthread.h" 2>&1 |CT_DoLog ALL
fi
if [ -n "${pthreadtypes_h}" ]; then
cp -v "${pthreadtypes_h}" "${CT_HEADERS_DIR}/bits/pthreadtypes.h" 2>&1 |CT_DoLog ALL
fi
CT_EndStep
}
# Build and install start files
do_libc_start_files() {
# Needed only in the NPTL case. Otherwise, return.
[ "${CT_THREADS}" = "nptl" ] || return 0
CT_DoStep INFO "Installing C library start files"
mkdir -p "${CT_BUILD_DIR}/build-libc-startfiles"
cd "${CT_BUILD_DIR}/build-libc-startfiles"
CT_DoLog EXTRA "Configuring C library"
# Add some default glibc config options if not given by user.
extra_config=""
case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
*enable-kernel*) ;;
*) extra_config="${extra_config} --enable-kernel=`echo ${CT_KERNEL_VERSION} |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;'`"
esac
case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
*-tls*) ;;
*) extra_config="${extra_config} --with-tls"
esac
case "${CT_SHARED_LIBS}" in
y) extra_config="${extra_config} --enable-shared";;
*) extra_config="${extra_config} --disable-shared";;
esac
case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
y,) extra_config="${extra_config} --with-fp";;
,y) extra_config="${extra_config} --without-fp";;
esac
# Obviously, we want threads, as we come here only for NPTL
extra_config="${extra_config} --with-__thread"
addons_config="--enable-add-ons=`do_libc_add_ons_list ,`"
extra_config="${extra_config} ${addons_config}"
# Add some default CC args
glibc_version_major=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^([^\.]+)\..*/\1/')
glibc_version_minor=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^[^\.]+\.([^.]+).*/\1/')
if [ ${glibc_version_major} -eq 2 -a ${glibc_version_minor} -ge 6 \
-o ${glibc_version_major} -gt 2 ]; then
# Don't use -pipe: configure chokes on it for glibc >= 2.6.
CT_Test 'Removing "-pipe" for use with glibc>=2.6' "${CT_USE_PIPES}" = "y"
extra_cc_args="${CT_CFLAGS_FOR_HOST/-pipe}"
else
extra_cc_args="${CT_CFLAGS_FOR_HOST}"
fi
extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
cross_cc=`CT_Which "${CT_TARGET}-gcc"`
CT_DoLog DEBUG "Using gcc for target : \"${cross_cc}\""
CT_DoLog DEBUG "Configuring with addons : \"`do_libc_add_ons_list ,`\""
CT_DoLog DEBUG "Extra config args passed: \"${extra_config}\""
CT_DoLog DEBUG "Extra CC args passed : \"${extra_cc_args}\""
# Super-H really needs to set configparms as of gcc-3.4/glibc-2.3.2
# note: this is awkward, doesn't work well if you need more than one
# line in configparms
echo ${CT_LIBC_GLIBC_CONFIGPARMS} > configparms
echo "libc_cv_forced_unwind=yes" > config.cache
echo "libc_cv_c_cleanup=yes" >> config.cache
# Please see the comment for the configure step in do_libc().
BUILD_CC=${CT_CC_NATIVE} \
CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} -O " \
CC="${cross_cc} ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
AR=${CT_TARGET}-ar \
RANLIB=${CT_TARGET}-ranlib \
"${CT_SRC_DIR}/${CT_LIBC_FILE}/configure" \
--prefix=/usr \
--build="${CT_UNIQ_BUILD}" \
--host=${CT_TARGET} \
--without-cvs \
--disable-profile \
--disable-debug \
--without-gd \
--with-headers="${CT_HEADERS_DIR}" \
--cache-file=config.cache \
${extra_config} \
${CT_LIBC_GLIBC_EXTRA_CONFIG} 2>&1 |CT_DoLog ALL
#TODO: should check whether slibdir has been set in configparms to */lib64
# and copy the startfiles into the appropriate libdir.
CT_DoLog EXTRA "Building C library start files"
make csu/subdir_lib 2>&1 |CT_DoLog ALL
CT_DoLog EXTRA "Installing C library start files"
if [ "${CT_USE_SYSROOT}" = "y" ]; then
cp -fp csu/crt[1in].o "${CT_SYSROOT_DIR}/usr/lib/"
else
cp -fp csu/crt[1in].o "${CT_SYSROOT_DIR}/lib/"
fi
CT_EndStep
}
# This function builds and install the full glibc
do_libc() {
CT_DoStep INFO "Installing C library"
mkdir -p "${CT_BUILD_DIR}/build-libc"
cd "${CT_BUILD_DIR}/build-libc"
CT_DoLog EXTRA "Configuring C library"
# Add some default glibc config options if not given by user.
# We don't need to be conditional on wether the user did set different
# values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
extra_config="--enable-kernel=`echo ${CT_KERNEL_VERSION} |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;'`"
case "${CT_THREADS}" in
nptl) extra_config="${extra_config} --with-__thread --with-tls";;
linuxthreads) extra_config="${extra_config} --with-__thread --without-tls --without-nptl";;
none) extra_config="${extra_config} --without-__thread --without-nptl"
case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
*-tls*) ;;
*) extra_config="${extra_config} --without-tls";;
esac
;;
esac
case "${CT_SHARED_LIBS}" in
y) extra_config="${extra_config} --enable-shared";;
*) extra_config="${extra_config} --disable-shared";;
esac
case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
y,) extra_config="${extra_config} --with-fp";;
,y) extra_config="${extra_config} --without-fp";;
esac
case "`do_libc_add_ons_list ,`" in
"") ;;
*) extra_config="${extra_config} --enable-add-ons=`do_libc_add_ons_list ,`";;
esac
# Add some default CC args
glibc_version_major=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^([^\.]+)\..*/\1/')
glibc_version_minor=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^[^\.]+\.([^.]+).*/\1/')
if [ ${glibc_version_major} -eq 2 -a ${glibc_version_minor} -ge 6 \
-o ${glibc_version_major} -gt 2 ]; then
# Don't use -pipe: configure chokes on it for glibc >= 2.6.
CT_Test 'Removing "-pipe" for use with glibc>=2.6' "${CT_USE_PIPES}" = "y"
extra_cc_args="${CT_CFLAGS_FOR_HOST/-pipe}"
else
extra_cc_args="${CT_CFLAGS_FOR_HOST}"
fi
extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
cross_cc=`CT_Which "${CT_TARGET}-gcc"`
CT_DoLog DEBUG "Using gcc for target : \"${cross_cc}\""
CT_DoLog DEBUG "Configuring with addons : \"`do_libc_add_ons_list ,`\""
CT_DoLog DEBUG "Extra config args passed: \"${extra_config}\""
CT_DoLog DEBUG "Extra CC args passed : \"${extra_cc_args}\""
# sh3 and sh4 really need to set configparms as of gcc-3.4/glibc-2.3.2
# note: this is awkward, doesn't work well if you need more than one line in configparms
echo ${CT_LIBC_GLIBC_CONFIGPARMS} > configparms
# For glibc 2.3.4 and later we need to set some autoconf cache
# variables, because nptl/sysdeps/pthread/configure.in does not
# work when cross-compiling.
if [ "${CT_THREADS}" = "nptl" ]; then
echo libc_cv_forced_unwind=yes
echo libc_cv_c_cleanup=yes
fi >config.cache
# Configure with --prefix the way we want it on the target...
# There are a whole lot of settings here. You'll probably want
# to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG
# Compare these options with the ones used when installing the glibc headers above - they're different.
# Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
# See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
# Set BUILD_CC, or you won't be able to build datafiles
# Set --build, else glibc-2.3.2 will think you're not cross-compiling, and try to run the test programs
# OK. I'm fed up with those folks telling me what I should do.
# I don't configure nptl? Well, maybe that's purposedly because
# I don't want nptl! --disable-sanity-checks will shut up those
# silly messages. GNU folks again, he?
BUILD_CC=${CT_CC_NATIVE} \
CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} -O" \
CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
AR=${CT_TARGET}-ar \
RANLIB=${CT_TARGET}-ranlib \
"${CT_SRC_DIR}/${CT_LIBC_FILE}/configure" \
--prefix=/usr \
--build=${CT_UNIQ_BUILD} \
--host=${CT_TARGET} \
--without-cvs \
--disable-profile \
--disable-debug \
--without-gd \
--disable-sanity-checks \
--cache-file=config.cache \
--with-headers="${CT_HEADERS_DIR}" \
${extra_config} \
${CT_LIBC_GLIBC_EXTRA_CONFIG} 2>&1 |CT_DoLog ALL
if grep -l '^install-lib-all:' "${CT_SRC_DIR}/${CT_LIBC_FILE}/Makerules" > /dev/null; then
# nptl-era glibc.
# If the install-lib-all target (which is added by our make-install-lib-all.patch)
# is present, it means we're building glibc-2.3.3 or later, and we can't
# build programs yet, as they require libeh, which won't be installed
# until full build of gcc
# YEM-FIXME: This comment is misleading: latest glibc-s do not have the
# make-install-lib-all.patch applied, so do not pass through this
# part of the if statement; nonetheless, they do build, and
# the result is useable (maybe the dual-pass core gcc is
# responsible for this).
GLIBC_INITIAL_BUILD_RULE=lib
GLIBC_INITIAL_INSTALL_RULE="install-lib-all install-headers"
GLIBC_INSTALL_APPS_LATER=yes
else
# classic glibc.
# We can build and install everything with the bootstrap compiler.
GLIBC_INITIAL_BUILD_RULE=all
GLIBC_INITIAL_INSTALL_RULE=install
GLIBC_INSTALL_APPS_LATER=no
fi
# If this fails with an error like this:
# ... linux/autoconf.h: No such file or directory
# then you need to set the KERNELCONFIG variable to point to a .config file for this arch.
# The following architectures are known to need kernel .config: alpha, arm, ia64, s390, sh, sparc
# Note: LD and RANLIB needed by glibc-2.1.3's c_stub directory, at least on macosx
# No need for PARALLELMFLAGS here, Makefile already reads this environment variable
CT_DoLog EXTRA "Building C library"
make LD=${CT_TARGET}-ld \
RANLIB=${CT_TARGET}-ranlib \
${GLIBC_INITIAL_BUILD_RULE} 2>&1 |CT_DoLog ALL
CT_DoLog EXTRA "Installing C library"
make install_root="${CT_SYSROOT_DIR}" \
${LIBC_SYSROOT_ARG} \
${GLIBC_INITIAL_INSTALL_RULE} 2>&1 |CT_DoLog ALL
# This doesn't seem to work when building a crosscompiler,
# as it tries to execute localedef using the just-built ld.so!?
#CT_DoLog EXTRA "Installing locales"
#make localedata/install-locales install_root=${SYSROOT} 2>&1 |CT_DoLog ALL
# Fix problems in linker scripts.
#
# 1. Remove absolute paths
# Any file in a list of known suspects that isn't a symlink is assumed to be a linker script.
# FIXME: test -h is not portable
# FIXME: probably need to check more files than just these three...
# Need to use sed instead of just assuming we know what's in libc.so because otherwise alpha breaks
#
# 2. Remove lines containing BUG per http://sources.redhat.com/ml/bug-glibc/2003-05/msg00055.html,
# needed to fix gcc-3.2.3/glibc-2.3.2 targeting arm
#
# To make "strip *.so.*" not fail (ptxdist does this), rename to .so_orig rather than .so.orig
CT_DoLog EXTRA "Fixing C library linker scripts"
for file in libc.so libpthread.so libgcc_s.so; do
for dir in lib lib64 usr/lib usr/lib64; do
if [ -f "${CT_SYSROOT_DIR}/${dir}/${file}" -a ! -L ${CT_SYSROOT_DIR}/$lib/$file ]; then
cp "${CT_SYSROOT_DIR}/${dir}/${file}" "${CT_SYSROOT_DIR}/${dir}/${file}_orig"
CT_DoLog DEBUG "Fixing \"${CT_SYS_ROOT_DIR}/${dir}/${file}\""
sed -i -r -e 's,/usr/lib/,,g;
s,/usr/lib64/,,g;
s,/lib/,,g;
s,/lib64/,,g;
/BUG in libc.scripts.output-format.sed/d' "${CT_SYSROOT_DIR}/${dir}/${file}"
fi
done
done
CT_EndStep
}
# This function finishes the glibc install
do_libc_finish() {
# Finally, build and install glibc programs, now that libeh (if any) is installed
# Don't do this unless needed, 'cause it causes glibc-2.{1.3,2.2} to fail here with
# .../gcc-3.4.1-glibc-2.1.3/build-glibc/libc.so.6: undefined reference to `__deregister_frame_info'
# .../gcc-3.4.1-glibc-2.1.3/build-glibc/libc.so.6: undefined reference to `__register_frame_info'
[ "${GLIBC_INSTALL_APPS_LATER}" = "yes" ] || return 0
CT_DoStep INFO "Finishing C library"
cd "${CT_BUILD_DIR}/build-libc"
CT_DoLog EXTRA "Re-building C library"
make LD=${CT_TARGET}-ld RANLIB=${CT_TARGET}-ranlib 2>&1 |CT_DoLog ALL
CT_DoLog EXTRA "Installing missing C library components"
# note: should do full install and then fix linker scripts, but this is faster
for t in bin rootsbin sbin data others; do
make install_root="${CT_SYSROOT_DIR}" \
${LIBC_SYSROOT_ARG} \
install-${t} 2>&1 |CT_DoLog ALL
done
CT_EndStep
}
# Build up the addons list, separated with $1
do_libc_add_ons_list() {
local sep="$1"
local addons_list=`echo "${CT_LIBC_ADDONS_LIST//,/${sep}}" |tr -s ,`
case "${CT_THREADS}" in
none) ;;
*) addons_list="${addons_list}${sep}${CT_THREADS}";;
esac
[ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
addons_list="${addons_list%%${sep}}"
echo "${addons_list##${sep}}"
}
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